code: def vsum(*args):
      return sum(args)
  
file_path: distributed/distributed/tests/test_stress.py
imports: from __future__ import annotations
  import asyncio
  import random
  from contextlib import suppress
  from operator import add
  from time import sleep
  import pytest
  from tlz import concat, sliding_window
  from dask import delayed
  from distributed import Client, Nanny, Worker, wait
  from distributed.chaos import KillWorker
  from distributed.compatibility import WINDOWS
  from distributed.metrics import time
  from distributed.utils import CancelledError
  from distributed.utils_test import NO_AMM, bump_rlimit, cluster, gen_cluster, inc, nodebug_setup_module, nodebug_teardown_module, slowadd, slowinc, slowsum
label_desc: Use image node_id 3 for calling a global function with example usage: vsum() and returns: sum